Weather strip



OCL 1933- P. R. OFTEDAL WEATHER STRIP Filed June 24. 1952 "aura/H 154 j! My Patented Oct. 3, 1933 umrao STA ES pmnmomcn WEATHER. s'rmr Philip nportedai, Chicagmlll. Application June aaiasz. SerialNo. 619,056

2 Claims. (01. -69) invention relates to improvements in metal weatherstrips for windows and has as one of its objects the productionof a Weatherstrip having wide limits of adjustment adapting it tofit and compensate for substantialvariations in the space between the sash and the window frame.

Moreparticularly the invention contemplates a Weatherstrip of the kind-described having interlocking members equally adapted to cooperate and shut out theweather both'when the window sash are swollen byreason'of damp weather'and are shrunk during dry weather; 1 I I A further objectiof the invention is the provision of a two piece Weatherstrip adapted to be economically constructed from sheet metal or the like and for installation onwindows having sliding sashes, one of saidpieces being. fastened to the window frame and the other, being fastened to the sash without requiring any alteration of the frame and slight or no alteration of the sash. Still another object of the invention is the provision of a weatherstripwhichis simple, durable,

. economical and satisfactory for its intended pur- 25 i showing both theiupper and the lower sash equipped with one embodiment of the invention; and I "Referring now more particularly to the draw ing, the numeral loillustrates the jamb of a conventional windowframe or casing providing a sash groove or space 11 between a molding 13 members 20 and 30, the members 20 being mounted on and movable with each of the sash 16 and.

17 and the members 30 being fixedly mounted on the frame'10; The member 20 interlocks with the member 30 to form a Weatherstrip which is self adjusting to provide air and weathertight closures for the variable widthspaces 1 1 and 12 between the frame 10 and the edgesj18 and l9 of the sash 16 and 17 respectively. The size'of the spaces 11 and.12 vary according to the swell-, ing or shrinking of the'sash and the window frame'in wet and dry weather. The interlocking construction of the weatherstrips also adapts a window or'frame of a standard or given dimension as'a satisfactoryzmounting for sash of slightly different widths and avoids the necessity of providing sash of exact dimensions since the Weatherstrip members. interlock in a manner to permit substantial lateral shifting of the sash relative to the frame 10. i

The members 20 and 30 possess sufiicient flexibility and interlock in'such amanner that they holdthe sash snugly against the molding 15 to eliminate rattling of sash in windy weather, there being otherwise more or less side movement of the sash in the runway provided'forcmoving; the sash up and down. 1 r 1 The edges o1 the sash 16 and 17 are provided with recesses 39 adjacent'the: parting strip 14,

such recesses being of a depth suflicient to contain the interlocking portions of the members 20 and 30. The members 30 preferably extend the, full height of the frame 10 onv which they are fixedly mounted and the members 20 extend substantially the 'fulPlngth of the sash.

'Themiddle portion of the member 20 is folded 'to providea'loop 25 extending substantially the full depth of and in contact-with one wall of the recess 39.; One edge portion ofthe member 20 forms a flange 21 extending at substantially right angles to the loop 25 with ltstmarginal edge 22 inturned and'folded along-the flange; The in termediate portion of the flange '10 provides a sash by nails or tacks 24'. The corrugations 23 are of sufllcient depth that'the heads of the nails' 24 positioned therein-clear the frame 10 as the closing the window. 1 a

The edge portion 27 'of the member 20, opposite to the flange 21, is turned back in substantially parallel spaced'a'part relation to the loop 25 with its marginal edge portion inturned to .sash are moved up and down in opening and provide a rim 28. The loop 25 provides a bead 26 along its line of bend, the bead contributing flexibility'and permitting the loop to open up and close without undue strain on the material and also provides a contact point cooperating with the adjacent portion of the member 30 when the members are assembled in interlocking relaa e corrugation 23 and is fastened to the edge of the Figs. 2 and 3 areperspective views of the'strips comprising the. device. a

1 tion. The line of fold between the loop 25 and along and in contact with the frame. The berid ing line of the rib 34 provides a bead 35 with which the flange 21 of the member 20 contacts when the sash is moved towards the frame. The strip .14 is partially embedded'in and closely fits a vertically extending groove formed in theside jamb of the frame 10. The edge portion 36 ofthe member 30 on one side of the rib 34 lines the side of the groove 40 and has its marginal edge'providing a flange 37 resting upon the bottom of the groove. The; extreme 'marginal edge portion of the flange 37 is folded back to provide a rim 38 to avoid: possibility of injury to workmen in handling the members 30 during-assembly and construction. The wedging action of the parting strip 14 in the groove 40' securely fastens the members 30 to theframe 10.4. a s

The portion of the member30 opposite to the flange 36 is folded to provide a U -shaped member 31 having its extreme marginalv edge turned in-- 'wardly to form a bead 33. In assembling the ment of the sash relative tos thef-rame.

of lateral movement of the sash away from the members 20 and 30, the edge portion-2 1 ofthe member- 20 is'positioned in and interlocks with the loop 31 of the member 30. In their assembled interlocking position the fix'edframe member 30 thereby provides a runway for the movable sash member'20. p I

In opening and closing 'the window tthereis a well known tendency for the sash to move towards and away from the frame 10-and'the,described construction and interlocking of the membeam 20 and 30 limits the, amount of lateral move- In case frame, the bead 25'comes into contact with the bead 33-providing a stop limiting theamount of: such'rnovement and also effectively sealingthe 1 space between the membersragainst the passage of 'air or moisture. If the sash is moved towards the frame in opening or closing, thebead 29 contacts with the rib 34- and the flange-21 contacts with the bead 35 thereby'sealingthe space between the frame and the sash against the pas--v sage of airandmoisture. Q 1

Intermediate the" described extreme inward and outward positions of the sash relative to the frame 10,. the interlocking members 20 and-21 constructed and assembled as described, provide 'a narrow restricted tortuous passage way -pre-.

venting flow of 'air 'therethrough and effectively sealing the spaces by reason ofthe contact of the beads of one member with the adjacent portions of .the other member. The beads 26 and 29 on the member 20 and the bead 32 on the'member 30 not only tend to restrict the clear spaces between the cooperating portions of the members 20 and 30 but also provide lines of bend permitting the members to yield transversely without unduly straining the material in the event of pressure exerted sidewise upon the window. The beaded portions provide sufficient rigidity to prevent substantial side movement of the sash and thereby avoid contact of the sash in raising and lowering and also provides sufficient resistance to wind pressure to avoid rattling of the sash both when )ened andfclosad.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

. 1. A Weatherstrip of the kind described comprising two cooperating members one adapted to be mounted on and movable with a sliding sash and the other adapted to be fixedly mounted on a window frame, said movable member having one :edge portion comprising a flange adapted to be fastened to the edge of the sash, said flange having its marginal edge inturned and its middle portion corrugated to provide a nailing line, the

middle portion of said movable member beingv folded to provide a loop extending along the side of the sash'with the extremity of said loop providing a bead, the other edge portion of the movable member being folded to provide a flange in spaced substantially parallel relation to said loop, said fixed member having one edge portion folded to provide a loop telescoping oversaid last mentioned flange with its line of fold forming a bead in yieldable sliding contact with the bead on the movable member, the middle portion of said fixed member being folded to provide a narrow rib projecting substantially perpendicular to its looped edge portion, the extremity of said rib providing a bead, the otherjedge of said fixed member extending substantially perpendicular to said rib and having itsmarginal edge forming 'a flange extending oppositely to and substantially parallel with said rib.

2. In combination a window frame having a vertically extending groove in its side, upper and lower' sash slidably mounted in the frame and a parting strip partially embedded in said groove with its projecting portion separating said sash,

.of a Weatherstrip comprising two cooperating members closing the space between said frame and sash, one of said members having its middle portion foldedfto form a rib positioned in said space and extending along the side of the frame with one edge portion wedged between the parting strip and the side and bottom walls of said groove and its other edge portion folded to form a narrow loop extending along the side. of the projecting portion of the parting strips, the lines of bend of said'loop and rib each forming a bead, the other of said'members having one edge providing a corrugated flange fastened to the edge of the sash adjacent said'rib' with its middle portion folded to provide a loop positioned between the first mentioned loop and the side of the sash with its line of bend forming a bead contacting with the bead on said first mentioned loop and its edge portion opposite said flange extending into the first mentioned 'loop'substantially the full depth thereof.

PHILIP R. OFTEDAL. 

